Testing for Neuromyelitis Optica (NMO)

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NMO Graph 2

April 2010

Similarly, in respect of optic neuritis, patients were divided into those that had an optic neuritis that tested NMO-IgG negative and those that had optic neuritis that tested NMO-IgG positive. Again, if the patient was positive for NMO-IgG, they had a high likelihood of developing another attack of optic neuritis or an attack of longitudinally extensive transverse myelitis in the follow-up period. Identification of NMO-IgG in a patient with optic neuritis or a current optic neuritis, predicts the development of another attack. So, who should we consider ordering NMO-IgG in?